<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<style>
		body {
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100vh;
			background-color: #292929;
		}

		.btn {
			width: 256px;
			height: 72px;
			background: linear-gradient(268deg, #FF4E4E 0%, #FFAF5F 100%);
			box-shadow: 0px 10px 0px #E03C3C;
			border-radius: 36px;
			text-align: center;
			line-height: 72px;
			color: #fff;
			font-size: 30px;
		}
	</style>
	<body>
		<div class="btn">我知道了</div>
	</body>
</html>
